Heater particularly for circulating air heating of cooking device, has open cellular ceramic material and carbon nanotubes, where ceramic material is cogged with carbon nanotubes

摘要

The heater has an open cellular ceramic material and carbon nanotubes. The ceramic material is cogged with the carbon nanotubes. The ceramic material is covered with the carbon nanotubes. The carbon nanotubes are embedded in a matrix, particularly sol-gel matrix. The matrix also has an electrically conductive filler. The electrically conductive filler comprises carbon black or graphite. The ceramic material comprises alumina, aluminum nitride, silicon nitride, silicon oxide or cordierite. An independent claim is also included for a method for manufacturing a heater.